1331321110400 has 96 divisors (see below), whose sum is σ = 3289111261680. Its totient is φ = 532474675200.

The previous prime is 1331321110393. The next prime is 1331321110417. The reversal of 1331321110400 is 40111231331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51158192 + ... + 51184208.

Almost surely, 2^{1331321110400} is an apocalyptic number.

1331321110400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331321110400 is an abundant number, since it is smaller than the sum of its proper divisors (1957790151280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331321110400 is a wasteful number, since it uses less digits than its factorization.

1331321110400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42032 (or 42015 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1331321110400 its reverse (40111231331), we get a palindrome (1371432341731).

The spelling of 1331321110400 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred ten thousand, four hundred".